Make Convert To File Encryption work

Actually call to recovery from ConvertToFBE
Adding credential check
Gray out Convert option when converted

Change-Id: Ic98929ff49733d182b529012e58870156f40679a

res/values/strings.xml

@@ -2009,14 +2009,17 @@
 
     <!-- Option to convert userdata to file encryption on Nexus M devices -->
     <string name="convert_to_file_encryption">Convert to file encryption</string>
-    <string name="convert_to_file_encryption_enabled">Convert ...</string>
+    <string name="convert_to_file_encryption_enabled">Convert\u2026</string>
     <string name="convert_to_file_encryption_done">Already file encrypted</string>
+    <!-- Title used on dialog with final prompt for converting to file encryption -->
+    <string name="title_convert_fbe">Converting to file based encryption</string>
+    <!-- Warning displayed on dialog with final prompt for converting to file encryption -->
     <string name="convert_to_fbe_warning">
       Convert data partition to file based encryption.\n
       !!Warning!! This will erase all your data.\n
       This feature is alpha, and may not work correctly.\n
-      Press \'Wipe and convert...\' to continue.</string>
+      Press \'Wipe and convert\u2026\' to continue.</string>
-    <string name="button_convert_fbe">Wipe and convert...</string>
+    <string name="button_convert_fbe">Wipe and convert\u2026</string>
 
     <!-- Sound & display settings screen, setting option name to change screen timeout -->
     <string name="screen_timeout">Sleep</string>

res/xml/development_prefs.xml

@@ -71,7 +71,7 @@
         android:key="convert_to_file_encryption"
         android:title="@string/convert_to_file_encryption"
         android:summary="@string/convert_to_file_encryption_enabled"
-        android:fragment="com.android.settings.applications.ConvertToFBE" />
+        android:fragment="com.android.settings.applications.ConvertToFbe" />
 
     <com.android.settings.ColorModePreference
         android:key="color_mode"

src/com/android/settings/ChooseLockSettingsHelper.java

@@ -59,7 +59,7 @@ public final class ChooseLockSettingsHelper {
      * @return true if one exists and we launched an activity to confirm it
      * @see Activity#onActivityResult(int, int, android.content.Intent)
      */
-    boolean launchConfirmationActivity(int request, CharSequence title) {
+    public boolean launchConfirmationActivity(int request, CharSequence title) {
         return launchConfirmationActivity(request, title, null, null, false, false);
     }
 

src/com/android/settings/DevelopmentSettings.java

@@ -409,11 +409,18 @@ public class DevelopmentSettings extends SettingsPreferenceFragment
             removePreferenceForProduction(hdcpChecking);
         }
 
+        PreferenceScreen convertFbePreference =
+            (PreferenceScreen) findPreference(KEY_CONVERT_FBE);
+
         try {
             IBinder service = ServiceManager.getService("mount");
             IMountService mountService = IMountService.Stub.asInterface(service);
             if (!mountService.isConvertibleToFBE()) {
                 removePreference(KEY_CONVERT_FBE);
+            } else if (mountService.isPerUserEncryptionEnabled()) {
+                convertFbePreference.setEnabled(false);
+                convertFbePreference.setSummary(getResources()
+                                   .getString(R.string.convert_to_file_encryption_done));
             }
         } catch(RemoteException e) {
             removePreference(KEY_CONVERT_FBE);

src/com/android/settings/applications/ConvertToFBE.java

@@ -1,45 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.settings.applications;
-
-import android.app.Fragment;
-import android.os.Bundle;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.Button;
-
-import com.android.settings.R;
-
-/* Class to prompt for conversion of userdata to file based encryption
- */
-public class ConvertToFBE extends Fragment {
-
-    @Override
-    public View onCreateView(LayoutInflater inflater, ViewGroup container,
-                Bundle savedInstanceState) {
-        View rootView = inflater.inflate(R.layout.convert_fbe, null);
-
-        final Button button = (Button) rootView.findViewById(R.id.button_convert_fbe);
-        button.setOnClickListener(new View.OnClickListener() {
-                public void onClick(View v) {
-                    // Perform action on click
-                }
-            });
-
-        return rootView;
-    }
-}

src/com/android/settings/applications/ConvertToFbe.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.settings.applications;
+
+import android.app.Activity;
+import android.app.Fragment;
+import android.content.Intent;
+import android.content.res.Resources;
+import android.os.Bundle;
+import android.os.RecoverySystem;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+
+import com.android.settings.ChooseLockSettingsHelper;
+import com.android.settings.SettingsActivity;
+import com.android.settings.R;
+
+import java.io.IOException;
+
+/* Class to prompt for conversion of userdata to file based encryption
+ */
+public class ConvertToFbe extends Fragment {
+    static final String TAG = "ConvertToFBE";
+    static final String CONVERT_FBE_EXTRA = "ConvertFBE";
+    private static final int KEYGUARD_REQUEST = 55;
+
+    private boolean runKeyguardConfirmation(int request) {
+        Resources res = getActivity().getResources();
+        return new ChooseLockSettingsHelper(getActivity(), this)
+            .launchConfirmationActivity(request,
+                                        res.getText(R.string.convert_to_file_encryption));
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                Bundle savedInstanceState) {
+        View rootView = inflater.inflate(R.layout.convert_fbe, null);
+
+        final Button button = (Button) rootView.findViewById(R.id.button_convert_fbe);
+        button.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+                if(!runKeyguardConfirmation(KEYGUARD_REQUEST)) {
+                    convert();
+                }
+            }
+        });
+
+        return rootView;
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+
+        if (requestCode != KEYGUARD_REQUEST) {
+            return;
+        }
+
+        // If the user entered a valid keyguard credential, start the conversion
+        // process
+        if (resultCode == Activity.RESULT_OK) {
+            convert();
+        }
+    }
+
+    private void convert() {
+        Intent intent = new Intent(Intent.ACTION_MASTER_CLEAR);
+        intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);
+        intent.putExtra(Intent.EXTRA_REASON, "convert_fbe");
+        getActivity().sendBroadcast(intent);
+    }
+}